| 武汉某体育馆大跨度圆钢管拱桁架结构稳定性分析 |
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| 引用本文： | 袁健,周焕廷,蒋沧如.武汉某体育馆大跨度圆钢管拱桁架结构稳定性分析[J].建筑科学,2009,25(1). |
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| 作者姓名： | 袁健 周焕廷 蒋沧如 |
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| 作者单位： | 1. 中南林业科技大学土木建筑与力学学院,长沙,410004
2. 武汉理工大学土木工程与建筑学院,武汉,430070 |
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| 摘 要： | 武汉某体育馆屋盖采用圆钢管拱桁架结构,单榀拱桁架的截面形式为倒三角形,两端支承于立体钢桁架上,该结构的整体稳定性足设计的重点.考虑完善及带缺陷结构两种情况,对单榀及多榀拱桁架子结构进行线性屈曲、几何非线性稳定及弹塑性非线性稳定分析,得到了临界荷载与位移的关系曲线.分析结果表明,初始缺陷及几何非线性对该结构的稳定承载力影响不明显,而材料非线性的影响显著,加强平面外支撑对于提高结构的整体稳定性具有重要作用.
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| 关 键 词： | 倒三角形拱桁架 屈曲 稳定 几何非线性 材料非线性 |
Stability Analysis of Long-span Arch Truss Structure with Circular Steel Tube |
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| YUAN Jian,ZHOU Huan-ting,JIANG Cang-ru.Stability Analysis of Long-span Arch Truss Structure with Circular Steel Tube[J].Building Science,2009,25(1). |
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| Authors: | YUAN Jian ZHOU Huan-ting JIANG Cang-ru |
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| Affiliation: | 1.School of Civil Engineering and Mechanics;Central South University of Forestry & Technology;Changsha 410004;China;2.School of Civil Engineering and Architecture;Wuhan University of Technology;Wuhan 430070;China |
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| Abstract: | The overall structural stability of delta-sectional arch truss is the key point of design for a gymnasium in Wuhan City,which is composed of six pieces of delta-sectional arch trusses and supported by two spatial steel trusses. Linear buckling,geometric nonlinear stability and elastic-plastic nonlinear stability were investigated,allowing for the perfect and imperfect structures.The relational curves of critical load-displacement were obtained.The analysis results demonstrate that initial imperfection and g... |
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| Keywords: | delta-sectional arch truss buckling stability geometric nonlinearity material nonlinearity |
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